Even after sixteen years on the Net, I can still hear about new things. A customer of mine was having trouble with corrupted files he downloaded. In the end he found out that when he bypassed his router and plugged his computer directly into the modem, the problem disappeared! Huh. It seems the router introduced noise in the files. I would have thought that this would either be impossible or be very common, given the number of devices files fly through on their way around the Net.
BTW, I just got a new router yesterday. Virgin Media has given it the grandiose name The Superhub! And it does look a lot better than the old cable modem I had from them. And not the least, it has built-in not only wireless, but also an ethernet hub, so that was three devices I could unplug and replace with only one, pretty kewl.
I got it as part of a deal to upgrade from 20Mb to 30Mb. I don't expect to see much difference in practice, but on principle I just go with the best, roughly. It was just a smallish one-time fee.
It was also nice that Net connection, the wifi, and the ethernet all worked perfectly right off the bat, I love when that happens. (Only odd that it was mandatory to phone them up to get it registered and activated, that should not be necessary these days.)